The Treasure Hunt of an Antique Dealer

It's troublesome, how can it be troublesome to get a baby?

When Zhang Nan hung up the phone, a few people on the side heard the conversation between the two just now, and they couldn't turn around at this "trouble".

"has a problem?"

It was Sawaguchi Yasushi who asked, and she didn't understand either.

Zhang Nan nodded and said: "It's trouble, a lot of trouble!"

Why?

"...Brown is a jewelry appraisal and processing engineer. His thinking is to make every gem reflect its most perfect side from a practical point of view. At the same time, whether it is to be sold or not, it must reflect the greatest economic value. .

At present, Colombia’s high-quality emerald deposits are almost exhausted. Because of its brittle and cracked material, most of the rough emeralds produced in Colombia can only be polished into gems of less than 0.5 carats. Very few above 2 carats.

As for the auction company, the quality is decent, and the weight is greater than 5 carats. It is still a relatively important auction. The high-quality emeralds of 5-10 carats have the largest circulation in the top market.

As for emeralds that can be sold at the highest price, generally between 10 and 50 carats, this is not to say that larger emeralds cannot be sold at high prices, but that emeralds with such large finished gems have basically not been made in the past few decades. Crystals appear.

There is a big one, but there are too many internal impurities and cracks. No matter how big the crystal is, it will not be possible to process a big finished product..."

Unlike diamonds, color is an important factor in determining the value of emeralds!

The color grading of diamonds is simple and straightforward. Colorless diamonds can be directly judged by the degree of colorlessness, but the color of emeralds is much more complicated.

Although this color can be reflected by purity, saturation, and hue, it is difficult to decide which color has a better saturation or hue emerald. Therefore, in the emerald grading system, color grading is more troublesome, and it is often necessary. Rely on feeling.

The common color can be divided into five levels. The highest level is bright green, which is the highest level among emerald colors. If you can add "Cui", it will be even more remarkable. Just now, Zhang Nan made it based on his feelings. This judgment.

In fact, he doesn't have a cold for emeralds. Who made Zhang Nan a Chinese native? He only liked emeralds for the green mineral baby in his last life.

However, Jenny at home has a high degree of preference for emeralds, so Zhang Nan also understands it. This registration judgment is basically not wrong. Brown knows this, because of Zhang Nan’s grading appreciation of emeralds. He taught it.

Emerald, the greener the better?

No, too much green can turn black. Bright green is the darkest among all emerald greens that can avoid opacity or over-coloring. At the same time, the vividness of bright emeralds must be excellent, and "emerald" is the highest level of vividness.

Beneath the bright green is bright green. The bright green emeralds are slightly lighter in color than bright green, but they are also extremely popular, because there are really too few bright green emeralds, and money can't buy them!

The third gear is dark green, which is still quite rare and popular.

The fourth level is green with saturation between 50% and 70%, and then the fifth level is soft green with saturation between 20% and 40%.

As for the lower grade than soft green...

Don't buy it, it's not interesting anymore.

In addition to color grading, there is also clarity grading: the clarity of emeralds is to identify whether they are pure by the naked eye, which is different from the clarity of diamonds observed under a 10x magnifying glass!

Because the impurities contained in emeralds are generally more obvious than diamonds, there is no need to use a magnifying glass to observe them. There is no obvious difference in price between a pure emerald recognized by the naked eye and a pure emerald under a 10x magnifying glass.

In addition, for diamonds, color, clarity, weight, and cut have almost the same impact on price, but the impact of emerald color on price significantly exceeds clarity.

Therefore, in the emerald grading system, the clarity grading is relatively simple: the highest level is Flawless (FL/IF), which means that it is 100% free of impurities under the eyes of professional jewelers or experts.

Zhang Nan's eyes are good. Seeing that the number of high-end gemstones is terrifying, he can now be regarded as a 100% expert level.

He can't be wrong.

The second level is very fine impurities (VVS). Non-professionals cannot see any flaws, but professional jewellers or experts can observe very fine impurities.

The third level is very fine impurities (VS). Non-professionals can find very fine impurities under careful observation.

Below is the small impurities (SI). Non-professionals can find small impurities under careful observation, but it does not affect the color and vividness of the emerald.

The fifth level is impurities (I), which means that impurities are obvious and have an effect on the color and vividness of emeralds.

There is also a very distinctive classification of emeralds, which is "oil": the immersion oil is actually used to protect the emeralds. Because emeralds are flawed and cracked, the immersion oil runs through the entire process from mining to sales. middle.

When the rough stone is mined ~www.wuxiaspot.com~, the miners will immerse the stone in the oil tank that they carry with them, so that the gemstone will be effectively protected during subsequent cutting and will not be easily broken.

In modern emerald mining, this oil is basically unavoidable, even the top emeralds. It is nothing more than the better the clarity, the less oil the emerald has, because there are no gaps for the oil to enter.

A multi-lobed emerald, after being immersed in enough special oils, the grade can be greatly improved to the naked eye!

Was it soaked in oil when mining emeralds in the early 18th century?

It is unlikely that, even if there is, it should have been eroded by the sea because of the crevices; since there is no erosion, the huge crystals caught this time are oil-free.

Bright green, no time to add no oil, this emerald caught is the best product, let alone its terrifying size!

And the trouble is here, it's still a big trouble!

Regarding this, Zhang Nan smiled bitterly with the person next to him, and said, "Because it is too big and perfect, Brown and I don't know how to deal with it.

Is it put in a museum? This is a fast crystal, not a cultural relic, which is not in our interest.

But what can be made of him?

It weighs two or three kilograms, and Brown doesn't know what design to use to cut this guy without seeing the real thing, let alone how to cut it to perfectly reflect its best interests.

This is a big trouble, how do you deal with it better?"

Well, Nicole’s 407.48 carat "star" yellow diamond is not something ordinary people can hold. For the same reason, two or three kilograms, flawless, bright green emerald, how to deal with and where to hang it?

Trouble, big trouble!

The trouble of happiness, no matter how you cut it, is a waste, and it is even more trouble to leave it still. Other people stare at it with big eyes, just as dumbfounded.

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